Most of us expect to turn on the power supply of an appliance or switch on a light and find everything working as we expect. When it doesn't work we are left feeling somewhat bewildered, flustered or sometimes even angry. A quick call to an electrician or a replacement bulb usually fixes the problem. However, if the problem is of a more serious, life-threatening emergency, knowing how to deal with the problem and protect others is essential.
1. Check for Danger
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